> 2. The answer will be wrong. The reason is that the censoring occurs on a
> time scale, not a $ scale: you don't stop observing someone because
> total cost hits a threshold, but because calendar time does. The KM routines
> assume that the censoring process and the event process are on the > same
> scale.
> The result can be an overestimation of cost. See Dan-Yu Lin, Biometrics
> 1997, "Estimating medical costs from incomplete follow-up data".
>
> Terry Therneau
Thanks that's extremely useful.
I'll dig out that reference.
You are correct my censoring is happening on an event - (dis)continuation of
treatment - not on reaching a cumulative cost.
Calum
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